Solaris

hi i need to upgrade my solaris mysql version.. can u guide me the upgrade steps..
my current version is
4.0.31-log

i need to upgrade to 5.0
..
thanks..

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my solaris version is 10..

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is query execution dependable on mysql versions..
cause .. IS NULL not working in mysql 4.0 ..

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i need to know which one is best ... upgrading from the persisting version or fresh installation of 5.0.. since this is a initial stage .. i didn create a much tables for my application .. my ultimate need is to upgrade from 4.0 to 5.0..

---------- Post updated at 03:56 PM ---------- Previous update was at 01:39 PM ----------

hi ..
Is there any direct way to upgrade mysql 4.0 to mysql 5.1...
i went through mysql documentation .. but i couldn understand certain terminology.. can u guide me ... the steps to upgrade mysql 4.0 to mysql 5.1 ..

please read the release/upgrade documentation at mysql.com

i already went through upgrade steps but thats not clear to my mind...
i have currently version 4.0 working.. i want to upgrade to 5.1 ..
which means do i need to again install 4.1 ... and then 5.0 . then 5.1 ...?

guide me with your ideas..
can u guide me with step by step procedure ...
its breaking my mind since last morning..

thanks...

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should i remove the exisiting 4.0 version. .. if so how to remove the existing mysql 4.0 version...?

---------- Post updated at 01:20 PM ---------- Previous update was at 11:25 AM ----------

what are all the packages need for mysql 5.1..